JAVA如果把FOR循环数据取出来

Question

我现在这样写之后获取到最后一条数据
请问我该如果修改，才可以把全部数据循环出来

public List<UserOrder> findCat(){
        //查询一级下线
     //   int popularizeId = (int) tokenService.getAuthentication().get( "popularizeId" );//获取分销推广id
        int popularizeId = 531571277;//获取分销推广id
        EntityWrapper<User> userEntityWrapper = new EntityWrapper<>(  );
        userEntityWrapper.where( "PARENT_ID={0}",popularizeId );
        List<User> userList = webUsersMapper.selectList( userEntityWrapper );
        List<UserOrder> userOrder = null;
        for(User user : userList){
            Long userId = user.getId();//获得用户id
            System.out.println("用户id"+ userId );
            EntityWrapper<UserOrder> userOrderEntityWrapper = new EntityWrapper<>(  );
            userOrderEntityWrapper.where( "UID={0}" ,userId);
            webUserOrderMapper.selectList( userOrderEntityWrapper );
            userOrder = webUserOrderMapper.selectList( userOrderEntityWrapper );
        }

        return userOrder;
    }

Answer 1

public List<List<UserOrder>> findCat(){
        //查询一级下线
        //   int popularizeId = (int) tokenService.getAuthentication().get( "popularizeId" );//获取分销推广id
        int popularizeId = 531571277;//获取分销推广id
        EntityWrapper<User> userEntityWrapper = new EntityWrapper<>(  );
        userEntityWrapper.where( "PARENT_ID={0}",popularizeId );
        List<User> userList = webUsersMapper.selectList( userEntityWrapper );
        List<List<UserOrder>> userOrderList = new ArrayList<List<UserOrder>>();
        for(User user : userList){
            List<UserOrder> userOrder = new ArrayList<UserOrder>();
            Long userId = user.getId();//获得用户id
            System.out.println("用户id"+ userId );
            EntityWrapper<UserOrder> userOrderEntityWrapper = new EntityWrapper<>(  );
            userOrderEntityWrapper.where( "UID={0}" ,userId);
            webUserOrderMapper.selectList( userOrderEntityWrapper );
            userOrder = webUserOrderMapper.selectList( userOrderEntityWrapper );
            userOrderList.add(userOrder);
        }
        return userOrderList;
    }